更新完善页面

controllers/stock.js

@@ -1,13 +1,31 @@
-const { query } = require('../config/database')
+const { query, transaction } = require('../config/database')
 const { paginate } = require('../utils/pagination')
 
+async function ensureStockLogTable() {
+  await query(`
+    CREATE TABLE IF NOT EXISTS stock_logs (
+      id INT NOT NULL AUTO_INCREMENT,
+      goods_id INT NOT NULL,
+      change_type VARCHAR(20) NOT NULL COMMENT 'inbound/adjust/purchase/sale',
+      delta INT NOT NULL,
+      quantity_after INT NOT NULL,
+      operator_id INT,
+      remark VARCHAR(255),
+      created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+      PRIMARY KEY (id),
+      KEY goods_id (goods_id),
+      KEY created_at (created_at)
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='库存流水表'
+  `)
+}
+
 // 获取库存列表
 async function getStockList(ctx) {
   const keyword = ctx.query.keyword
   const threshold = parseInt(ctx.query.threshold) || 0
 
   let sql = `
-    SELECT 
+    SELECT
       s.id,
       s.goods_id,
       g.name as goods_name,
@@ -43,64 +61,62 @@ async function getStockList(ctx) {
 
 // 调整库存
 async function adjustStock(ctx) {
-  const goodsId = ctx.params.id
-  const { quantity, type } = ctx.request.body
+  const operator = ctx.state.user
+  if (!operator) {
+    ctx.status = 401
+    ctx.body = { code: 401, message: '未登录' }
+    return
+  }
+  const goodsId = parseInt(ctx.params.id)
+  const { quantity, type, remark } = ctx.request.body || {}
 
-  if (!quantity || quantity <= 0) {
-    ctx.body = {
-      code: 400,
-      message: '请输入有效的调整数量'
-    }
+  const qty = parseInt(quantity)
+  if (!qty || qty <= 0 || qty > 100000) {
+    ctx.body = { code: 400, message: '请输入 1-100000 之间的整数' }
+    return
+  }
+  if (type !== 'add' && type !== 'sub') {
+    ctx.body = { code: 400, message: 'type 必须是 add 或 sub' }
     return
   }
 
-  // 先检查库存记录是否存在
-  let stockRecords = await query('SELECT * FROM stock WHERE goods_id = ?', [goodsId])
+  await ensureStockLogTable()
 
-  if (stockRecords.length === 0) {
-    // 如果库存记录不存在，先创建
-    if (type === 'add') {
-      await query(
-        'INSERT INTO stock (goods_id, quantity, warehouse) VALUES (?, ?, ?)',
-        [goodsId, quantity, '默认仓库']
-      )
-    } else {
-      ctx.body = {
-        code: 400,
-        message: '库存不足，无法减少'
-      }
-      return
-    }
-  } else {
-    const currentStock = stockRecords[0]
-    let newQuantity
-
-    if (type === 'add') {
-      newQuantity = currentStock.quantity + quantity
-    } else {
-      newQuantity = currentStock.quantity - quantity
-      if (newQuantity < 0) {
-        ctx.body = {
-          code: 400,
-          message: '库存不足，无法减少'
+  try {
+    const newQuantity = await transaction(async (conn) => {
+      const [rows] = await conn.execute('SELECT * FROM stock WHERE goods_id = ? FOR UPDATE', [goodsId])
+      let current = rows[0]
+      if (!current) {
+        if (type === 'sub') {
+          throw new Error('库存不足，无法减少')
         }
-        return
+        await conn.execute(
+          'INSERT INTO stock (goods_id, quantity, warehouse) VALUES (?, ?, ?)',
+          [goodsId, qty, '默认仓库']
+        )
+        return qty
       }
-    }
+      const delta = type === 'add' ? qty : -qty
+      const next = current.quantity + delta
+      if (next < 0) throw new Error('库存不足，无法减少')
 
-    await query(
-      'UPDATE stock SET quantity = ? WHERE goods_id = ?',
-      [newQuantity, goodsId]
-    )
-  }
+      await conn.execute('UPDATE stock SET quantity = ? WHERE goods_id = ?', [next, goodsId])
+      await conn.execute(
+        'UPDATE goods SET stock = ? WHERE id = ?',
+        [Math.max(0, next), goodsId]
+      )
+      await conn.execute(
+        'INSERT INTO stock_logs (goods_id, change_type, delta, quantity_after, operator_id, remark) VALUES (?, ?, ?, ?, ?, ?)',
+        [goodsId, 'adjust', delta, next, operator.id, remark || '库存调整']
+      )
+      return next
+    })
 
-  // 获取更新后的库存
-  const updatedStock = await query('SELECT * FROM stock WHERE goods_id = ?', [goodsId])
-
-  ctx.body = {
-    code: 200,
-    data: updatedStock[0],
-    message: '库存调整成功'
+    const [updated] = await query('SELECT * FROM stock WHERE goods_id = ?', [goodsId])
+    ctx.body = { code: 200, data: updated, message: '库存调整成功', newQuantity }
+  } catch (error) {
+    ctx.status = 400
+    ctx.body = { code: 400, message: error.message || '调整失败' }
   }
 }